About two thirds of the Earth's surface is covered by the seas ___ are home to millions of species of plants and animals.A.where B.which C.in which D.for which不确定是否是选C ,另外为什么 home的前面是are

The number of the students in our grade is about six hundred,two thirds of them are girls.为什么要用“ two thirds 2.About two thirds of Earth is covered by water.用英语 句子解释是什么 About two thirds of the village()by waterA.is coveringB.is coveredC.are coveredD.are covering (About two thirds) of the earth is covered with water.对括号里的部分提问 ( )the studentsin these primary school is about three thousand,( )of them are girls.A.a number of,two third B.the number of ,two thirds C.a number of ,two thirds D.the number of,two third About( ) of the students in our school took part in the school sports meeting last fridayA.one-thirds B.two-thirds C.one-fifths D.two-thirds标准答案是d,我也不知道是为什么, 4. About _____ of the workers in the factory were born in the _______A,two thirds;1970B,two thirds;1970s C,two third;1970D,two third;1970s About ＿＿of the students in our class were born in the ＿＿A:two third ﹔1990s B:two third﹔1990 C:two thirds﹔1990s D:two thirds﹔1990 I have read two thirds of the book对two thirds划线提问 ____of the students of our school ___girls.A Two-thirds,are.B Two-thirds,is ____ of the people speak French.A Two third B.Two three C.Two thirds D.second Thirds Put the two shapes on top of each other .翻译下.Put the two shapes on top of each other and use the scissors again to make a cut,about two thirds of the way up both of the shapes 英语翻译Two thirds of our body___ ____ ___ ___water Two thirds of them are boys.【求翻译】 Two thirds of the students in our school ___girlsAis.Bare. two-thirds of 是3分之二吗 Cats spend two thirds of their lives sleeping. Cats spend two-thirds of their liveds sleeping.